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/* Copyright (c) 2002-2010 Dovecot Sieve authors, see the included COPYING file
*/
#include "lib.h"
#include "compat.h"
#include "mempool.h"
#include "hash.h"
#include "array.h"
#include "message-address.h"
#include "sieve-extensions.h"
#include "sieve-code.h"
#include "sieve-address.h"
#include "sieve-commands.h"
#include "sieve-binary.h"
#include "sieve-comparators.h"
#include "sieve-match-types.h"
#include "sieve-validator.h"
#include "sieve-generator.h"
#include "sieve-interpreter.h"
#include "sieve-dump.h"
#include "sieve-match.h"
#include "sieve-address-parts.h"
#include <string.h>
/*
* Default address parts
*/
const struct sieve_address_part_def *sieve_core_address_parts[] = {
&all_address_part, &local_address_part, &domain_address_part
};
const unsigned int sieve_core_address_parts_count =
N_ELEMENTS(sieve_core_address_parts);
/*
* Address-part 'extension'
*/
static bool addrp_validator_load
(const struct sieve_extension *ext, struct sieve_validator *valdtr);
const struct sieve_extension_def address_part_extension = {
"@address-parts",
NULL, NULL,
addrp_validator_load,
NULL, NULL, NULL, NULL, NULL,
SIEVE_EXT_DEFINE_NO_OPERATIONS,
SIEVE_EXT_DEFINE_NO_OPERANDS /* Defined as core operand */
};
/*
* Validator context:
* name-based address-part registry.
*/
static struct sieve_validator_object_registry *_get_object_registry
(struct sieve_validator *valdtr)
{
struct sieve_instance *svinst;
const struct sieve_extension *adrp_ext;
svinst = sieve_validator_svinst(valdtr);
adrp_ext = sieve_get_address_part_extension(svinst);
return sieve_validator_object_registry_get(valdtr, adrp_ext);
}
void sieve_address_part_register
(struct sieve_validator *valdtr, const struct sieve_extension *ext,
const struct sieve_address_part_def *addrp_def)
{
struct sieve_validator_object_registry *regs = _get_object_registry(valdtr);
sieve_validator_object_registry_add(regs, ext, &addrp_def->obj_def);
}
static bool sieve_address_part_exists
(struct sieve_validator *valdtr, const char *identifier)
{
struct sieve_validator_object_registry *regs = _get_object_registry(valdtr);
return sieve_validator_object_registry_find(regs, identifier, NULL);
}
static const struct sieve_address_part *sieve_address_part_create_instance
(struct sieve_validator *valdtr, struct sieve_command *cmd,
const char *identifier)
{
struct sieve_validator_object_registry *regs = _get_object_registry(valdtr);
struct sieve_object object;
struct sieve_address_part *addrp;
if ( !sieve_validator_object_registry_find(regs, identifier, &object) )
return NULL;
addrp = p_new(sieve_command_pool(cmd), struct sieve_address_part, 1);
addrp->object = object;
addrp->def = (const struct sieve_address_part_def *) object.def;
return addrp;
}
static bool addrp_validator_load
(const struct sieve_extension *ext, struct sieve_validator *valdtr)
{
struct sieve_validator_object_registry *regs =
sieve_validator_object_registry_init(valdtr, ext);
unsigned int i;
/* Register core address-parts */
for ( i = 0; i < sieve_core_address_parts_count; i++ ) {
sieve_validator_object_registry_add
(regs, NULL, &(sieve_core_address_parts[i]->obj_def));
}
return TRUE;
}
void sieve_address_parts_link_tags
(struct sieve_validator *valdtr, struct sieve_command_registration *cmd_reg,
int id_code)
{
struct sieve_instance *svinst;
const struct sieve_extension *adrp_ext;
svinst = sieve_validator_svinst(valdtr);
adrp_ext = sieve_get_address_part_extension(svinst);
sieve_validator_register_tag
(valdtr, cmd_reg, adrp_ext, &address_part_tag, id_code);
}
/*
* Address-part tagged argument
*/
/* Forward declarations */
static bool tag_address_part_is_instance_of
(struct sieve_validator *valdtr, struct sieve_command *cmd,
const struct sieve_extension *ext, const char *identifier, void **data);
static bool tag_address_part_validate
(struct sieve_validator *valdtr, struct sieve_ast_argument **arg,
struct sieve_command *cmd);
static bool tag_address_part_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *cmd);
/* Argument object */
const struct sieve_argument_def address_part_tag = {
"ADDRESS-PART",
tag_address_part_is_instance_of,
tag_address_part_validate,
NULL, NULL,
tag_address_part_generate
};
/* Argument implementation */
static bool tag_address_part_is_instance_of
(struct sieve_validator *valdtr, struct sieve_command *cmd,
const struct sieve_extension *ext ATTR_UNUSED, const char *identifier,
void **data)
{
const struct sieve_address_part *addrp;
if ( data == NULL )
return sieve_address_part_exists(valdtr, identifier);
if ( (addrp=sieve_address_part_create_instance
(valdtr, cmd, identifier)) == NULL )
return FALSE;
*data = (void *) addrp;
return TRUE;
}
static bool tag_address_part_validate
(struct sieve_validator *valdtr ATTR_UNUSED, struct sieve_ast_argument **arg,
struct sieve_command *cmd ATTR_UNUSED)
{
/* FIXME: Currenly trivial, but might need to allow for further validation for
* future extensions.
*/
/* Syntax:
* ":localpart" / ":domain" / ":all" (subject to extension)
*/
/* Skip tag */
*arg = sieve_ast_argument_next(*arg);
return TRUE;
}
static bool tag_address_part_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *cmd ATTR_UNUSED)
{
struct sieve_address_part *addrp =
(struct sieve_address_part *) arg->argument->data;
sieve_opr_address_part_emit(cgenv->sbin, addrp);
return TRUE;
}
/*
* Address-part operand
*/
const struct sieve_operand_class sieve_address_part_operand_class =
{ "address part" };
static const struct sieve_extension_objects core_address_parts =
SIEVE_EXT_DEFINE_MATCH_TYPES(sieve_core_address_parts);
const struct sieve_operand_def address_part_operand = {
"address-part",
NULL, SIEVE_OPERAND_ADDRESS_PART,
&sieve_address_part_operand_class,
&core_address_parts
};
/*
* Address Matching
*/
int sieve_address_match
(const struct sieve_address_part *addrp, struct sieve_match_context *mctx,
const char *data)
{
int result = FALSE;
const struct message_address *addr;
T_BEGIN {
bool valid = TRUE;
const struct message_address *aitem;
addr = message_address_parse
(pool_datastack_create(), (const unsigned char *) data,
strlen(data), 256, FALSE);
/* Check validity of all addresses simultaneously. Unfortunately,
* errorneous addresses cannot be extracted from the address list
* and therefore :all will match against the whole header value
* which is not entirely standard.
*/
aitem = addr;
while ( aitem != NULL) {
if ( aitem->invalid_syntax )
valid = FALSE;
aitem = aitem->next;
}
if ( !valid || addr == NULL ) {
if ( sieve_address_part_is(addrp, all_address_part) )
result = sieve_match_value(mctx, data, strlen(data));
else
result = FALSE;
} else {
while ( result == 0 && addr != NULL) {
/* mailbox@domain */
struct sieve_address address;
const char *part = NULL;
if ( addr->domain != NULL ) {
address.local_part = addr->mailbox;
address.domain = addr->domain;
if ( addrp->def != NULL && addrp->def->extract_from )
part = addrp->def->extract_from(addrp, &address);
if ( part != NULL )
result = sieve_match_value(mctx, part, strlen(part));
}
addr = addr->next;
}
}
} T_END;
return result;
}
/*
* Default ADDRESS-PART, MATCH-TYPE, COMPARATOR access
*/
bool sieve_addrmatch_default_dump_optionals
(const struct sieve_dumptime_env *denv, sieve_size_t *address)
{
int opt_code = 1;
if ( sieve_operand_optional_present(denv->sbin, address) ) {
while ( opt_code != 0 ) {
if ( !sieve_operand_optional_read(denv->sbin, address, &opt_code) )
return FALSE;
switch ( opt_code ) {
case 0:
break;
case SIEVE_AM_OPT_COMPARATOR:
if ( !sieve_opr_comparator_dump(denv, address) )
return FALSE;
break;
case SIEVE_AM_OPT_MATCH_TYPE:
if ( !sieve_opr_match_type_dump(denv, address) )
return FALSE;
break;
case SIEVE_AM_OPT_ADDRESS_PART:
if ( !sieve_opr_address_part_dump(denv, address) )
return FALSE;
break;
default:
return FALSE;
}
}
}
return TRUE;
}
bool sieve_addrmatch_default_get_optionals
(const struct sieve_runtime_env *renv, sieve_size_t *address,
struct sieve_address_part *addrp, struct sieve_match_type *mtch,
struct sieve_comparator *cmp)
{
int opt_code = 1;
if ( sieve_operand_optional_present(renv->sbin, address) ) {
while ( opt_code != 0 ) {
if ( !sieve_operand_optional_read(renv->sbin, address, &opt_code) )
return FALSE;
switch ( opt_code ) {
case 0:
break;
case SIEVE_AM_OPT_COMPARATOR:
if ( !sieve_opr_comparator_read(renv, address, cmp) )
return FALSE;
break;
case SIEVE_AM_OPT_MATCH_TYPE:
if ( !sieve_opr_match_type_read(renv, address, mtch) )
return FALSE;
break;
case SIEVE_AM_OPT_ADDRESS_PART:
if ( !sieve_opr_address_part_read(renv, address, addrp) )
return FALSE;
break;
default:
return FALSE;
}
}
}
return TRUE;
}
/*
* Core address-part modifiers
*/
static const char *addrp_all_extract_from
(const struct sieve_address_part *addrp ATTR_UNUSED,
const struct sieve_address *address)
{
const char *local_part = address->local_part;
const char *domain = address->domain;
if ( domain == NULL ) {
return local_part;
}
if ( local_part == NULL ) {
return NULL;
}
return t_strconcat(local_part, "@", domain, NULL);
}
static const char *addrp_domain_extract_from
(const struct sieve_address_part *addrp ATTR_UNUSED,
const struct sieve_address *address)
{
return address->domain;
}
static const char *addrp_localpart_extract_from
(const struct sieve_address_part *addrp ATTR_UNUSED,
const struct sieve_address *address)
{
return address->local_part;
}
const struct sieve_address_part_def all_address_part = {
SIEVE_OBJECT("all", &address_part_operand, SIEVE_ADDRESS_PART_ALL),
addrp_all_extract_from
};
const struct sieve_address_part_def local_address_part = {
SIEVE_OBJECT("localpart", &address_part_operand, SIEVE_ADDRESS_PART_LOCAL),
addrp_localpart_extract_from
};
const struct sieve_address_part_def domain_address_part = {
SIEVE_OBJECT("domain", &address_part_operand, SIEVE_ADDRESS_PART_DOMAIN),
addrp_domain_extract_from
};
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